My m413FF,

has matching Mckay Ind. upper and Lower, Green Mountain Barrel 1:7 twist, YHM 12" quadrails, and YHM iron sights.

I took it to the tanner gunshow, and compared it to a lot if different stuff.

I think he does a damn good job, finding good prices, or top knotch stuff.

Plus the guy that built my rifle is a phone call or a 45min drive away from me at all times.